CN219202175U

CN219202175U - Automatic switching device for common and standby control lines

Info

Publication number: CN219202175U
Application number: CN202320310666.1U
Authority: CN
Inventors: 钟节锋; 景元辉; 刘成; 陈智林; 汪祥辉
Original assignee: Jiangxi Tsinghua Taihao Sanbo Motor Co Ltd
Current assignee: Jiangxi Tsinghua Taihao Sanbo Motor Co Ltd
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-06-16
Anticipated expiration: 2033-02-24

Abstract

The utility model relates to the field of switchers and discloses a device for automatically switching a common control line and a standby control line, which comprises a touch screen for an operation interface, a PLC control panel for controlling the line, a generator set controller for reporting the parameter state of a unit, a relay for switching on and off a normally-closed signal and a diesel engine ECU for controlling a diesel engine to work.

Description

Automatic switching device for common and standby control lines

Technical Field

The utility model relates to the field of switchers, in particular to a device for automatically switching a common and standby control line.

Background

In the field of test of a generator set, in order to ensure the reliability of a power station in the power station, two common and standby control circuits are generally arranged, the common circuit generally completes the control of starting, closing, opening and stopping of the generator set through a generator set controller, and the emergency control circuit generally completes the control of starting, closing, opening and stopping of the generator set through a manual button/knob/toggle switch. The two circuits are generally switched by a working mode change-over switch on the panel, and when the working mode is normal, the two circuits are controlled by using a common control circuit; when the working mode is standby, a standby control line is used for control.

In a conventional power station, switching of manual/automatic lines is required by operating a change-over switch, and when the automatic operation mode fails, the state cannot be automatically recognized and switched to the manual mode.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a device for automatically switching common and standby control lines, which solves the problems.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a device of automatic switch-over of common, reserve control circuit, includes the touch-sensitive screen that is used for operating interface, the PLC control panel that is used for the control circuit, is used for reporting unit parameter state's generating set controller, opens normally closed signal conversion's relay and the diesel engine ECU of control diesel engine work, link together through the net twine communication between touch-sensitive screen and the PLC control panel, and link together through circuit communication between PLC control panel and the generating set controller, and PLC control panel and generating set controller are all in the same place through relay and diesel engine ECU communication connection.

Preferably, the PLC control panel comprises an emergency start, an emergency oil valve, an emergency full speed and a controller communication fault, and the controller communication fault is in communication connection with the relay.

Preferably, a connecting line between the generator set controller and the PLC control panel is RS485, and the generator set controller comprises a start A, an oil valve A and a full speed A.

Preferably, the diesel ECU includes a start-up B, an oil valve B, and a full speed B.

Preferably, the emergency start, the emergency oil valve, the emergency full speed and the start A, the oil valve A and the full speed A are correspondingly communicated with the start B, the oil valve B and the full speed B.

Preferably, the relay comprises two states, namely normally open and normally closed.

Preferably, the normally open state is that the communication between the PLC control panel and the generator set controller is normal, the normally closed state is that the communication between the PLC control panel and the generator set controller is abnormal, and the relay breaks communication connection between the generator set controller and the diesel engine ECU.

(III) beneficial effects

Compared with the prior art, the utility model provides a device for automatically switching common and standby control lines, which has the following beneficial effects:

1. compared with the common switching device, the common and control circuit automatic switching device can automatically send the control circuit to the standby circuit when the common control circuit fails, so that the automatic switching of the common and standby control circuits is realized, and the operation requirement of personnel is reduced.

Drawings

Fig. 1 is a structural diagram of the present utility model.

In the figure: 1. a touch screen; 2. a PLC control panel; 3. a genset controller; 4. a relay; 5. a diesel engine ECU; 6. a net wire; 7. emergency starting; 8. an emergency oil valve; 9. emergency full speed; 10. the controller is in communication failure; 11. starting A; 12. an oil valve A; 13. full speed a; 14. starting B; 15. an oil valve B; 16. full speed B.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, a device for automatically switching a common and standby control line includes a touch screen 1 for an operation interface, a PLC control panel 2 for controlling the line, a generator set controller 3 for reporting the parameter status of the unit, a relay 4 for switching on and off the normally closed signal, and a diesel engine ECU5 for controlling the operation of the diesel engine, wherein the touch screen 1 and the PLC control panel 2 are connected together by a network cable 6, the PLC control panel 2 and the generator set controller 3 are connected together by the line communication, the PLC control panel 2 and the generator set controller 3 are connected together by the relay 4, the touch screen 1 is used for providing an interface for a user to directly operate, and is communicated with the PLC control panel 2 by the network cable 6 to complete the reading and control of the parameters and the status of the power station, the generator set controller 3 is controlled by the PLC control panel 2 to control the diesel engine ECU5, and the starting mode of the diesel engine ECU5 is controlled by the relay 4.

Further, the PLC control panel 2 comprises an emergency start 7, an emergency oil valve 8, an emergency full speed 9 and a controller communication fault 10, the controller communication fault 10 is connected with the relay 4 in a communication way, the PLC control panel 2 is a programmable logic controller and is communicated with the touch screen 1 through a network port, and the reporting of power station parameters and states and the receiving of control instructions of the touch screen 1 are completed; the system is communicated with a generator set controller 3 through an RS485 line, and the reading of the parameters and states of the generator set and the control of the generator set are completed; and the control related IO points are arranged and used for completing the control and switching of the emergency line of the unit.

Further, a connection line between the generator set controller 3 and the PLC control panel 2 is RS485, the generator set controller 3 comprises a start A11, an oil valve A12 and a full-speed A13, the generator set controller 3 is communicated with the PLC through the RS485 line, receives start and stop instructions sent by the PLC control panel 2 and reports parameter states of the generator set, and meanwhile outputs corresponding models to the diesel engine ECU5 to finish start and operation stop control of the generator set.

Further, the diesel ECU5 includes a start-up B14, an oil valve B15, and a full-speed B16.

Further, the emergency start 7, the emergency oil valve 8, the emergency full speed 9, the start A11, the oil valve A12 and the full speed A13 are correspondingly and communicatively connected with the start B14, the oil valve B15 and the full speed B16.

Further, the relay 4 comprises two states, namely normally open and normally closed, if the communication between the PLC control panel 2 and the generator set controller 3 is normal, a corresponding shutdown instruction is sent to the generator set controller, after the generator set controller receives the instruction, the start-up B14, the oil valve B15 and the full-speed B16 which are output to the diesel engine ECU5 are disconnected, and the signals of the start-up B14, the oil valve B15 and the full-speed B16 of the diesel engine ECU5 are synchronously disconnected to control the diesel engine to finish shutdown operation; if the PLC control panel 2 and the generator set controller 3 are abnormal, the corresponding controller communication fault 10 output point is connected, at the moment, the KA01 relay 4 acts, the contact is changed from normal open to normal close, meanwhile, the emergency starting 7, the emergency oil valve 8 and the emergency full-speed No. 9 point are disconnected, and the signals of the starting B14, the oil valve B15 and the full-speed B16 on the ECU are synchronously disconnected to control the diesel engine to finish shutdown operation.

Further, the normally open state is that the communication between the PLC control panel 2 and the generator set controller 3 is normal, the normally closed state is that the communication between the PLC control panel 2 and the generator set controller 3 is abnormal, and the relay 4 disconnects the communication connection between the generator set controller 3 and the diesel engine ECU 5.

Working principle: the touch screen 1 is an interface for providing direct operation for a user, and is communicated with the PLC control panel 2 through a network cable 6 to complete the reading and control of parameters and states of a power station, the PLC control panel 2 is used for controlling the generator set controller 3 to control the diesel engine ECU5, the relay 4 is used for controlling the starting mode of the diesel engine ECU5, the PLC control panel 2 is a programmable logic controller and is communicated with the touch screen 1 through a network port to complete the reporting of the parameters and states of the power station and the receiving of control instructions of the touch screen 1; the system is communicated with a generator set controller 3 through an RS485 line, and the reading of the parameters and states of the generator set and the control of the generator set are completed; the control system is provided with IO points related to control and is used for completing control and switching of an emergency line of a unit, the generator set controller 3 is communicated with the PLC through an RS485 line, receives starting and stopping instructions sent by the PLC control panel 2 and reports parameter states of the unit, and simultaneously outputs corresponding models to the diesel engine ECU5 to complete starting and running stopping control of the generator set, if the PLC control panel 2 is communicated with the generator set controller 3 normally, the corresponding stopping instructions are sent to the generator set controller, after the generator set controller receives the instructions, the signals of the starting B14, the oil valve B15 and the full speed B16 which are output to the diesel engine ECU5 are disconnected, and the signals of the starting B14, the oil valve B15 and the full speed B16 of the diesel engine ECU5 are synchronously disconnected to control the diesel engine to complete stopping operation; if the PLC control panel 2 and the generator set controller 3 are abnormal, the corresponding controller communication fault 10 output point is connected, at the moment, the KA01 relay 4 acts, the contact is changed from normal open to normal close, meanwhile, the emergency starting 7, the emergency oil valve 8 and the emergency full-speed No. 9 point are disconnected, and the signals of the starting B14, the oil valve B15 and the full-speed B16 on the ECU are synchronously disconnected to control the diesel engine to finish shutdown operation.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An automatic switching device for common and standby control lines is characterized in that: the intelligent diesel engine control system comprises a touch screen (1) for an operation interface, a PLC control panel (2) for controlling a circuit, a generator set controller (3) for reporting the parameter state of the unit, a relay (4) for switching on and switching off a normally-closed signal and a diesel engine ECU (5) for controlling the operation of the diesel engine, wherein the touch screen (1) and the PLC control panel (2) are connected together through a network cable (6) in a communication manner, the PLC control panel (2) and the generator set controller (3) are connected together through the circuit in a communication manner, and the PLC control panel (2) and the generator set controller (3) are connected together through the relay (4) and the diesel engine ECU (5) in a communication manner.

2. The apparatus for automatic switching of a common and backup control line according to claim 1, wherein: the PLC control panel (2) comprises an emergency start (7), an emergency oil valve (8), an emergency full-speed (9) and a controller communication fault (10), and the controller communication fault (10) is in communication connection with the relay (4).

3. The apparatus for automatic switching of a common and backup control line according to claim 2, wherein: the connection line between the generator set controller (3) and the PLC control panel (2) is RS485, and the generator set controller (3) comprises a starting A (11), an oil valve A (12) and a full-speed A (13).

4. The apparatus for automatic switching of a common and backup control line according to claim 2, wherein: the diesel engine ECU (5) includes a start-up B (14), an oil valve B (15), and a full-speed B (16).

5. An apparatus for automatic switching of a common and backup control line according to any of claims 3 or 4, wherein: the emergency starting (7), the emergency oil valve (8), the emergency full-speed (9) and the starting A (11), the oil valve A (12) and the full-speed A (13) are correspondingly communicated with the starting B (14), the oil valve B (15) and the full-speed B (16) together.

6. The apparatus for automatic switching of a common and backup control line according to claim 2, wherein: the relay (4) comprises two states, namely normally open and normally closed.

7. The apparatus for automatic switching of a common and backup control line according to claim 6, wherein: the normally open state is that the communication between the PLC control panel (2) and the generator set controller (3) is normal, the normally closed state is that the PLC control panel (2) and the generator set controller (3) are abnormal, and the relay (4) disconnects the communication connection between the generator set controller (3) and the diesel engine ECU (5).